30 Now Jesus also did many other miraculous signs before His disciples, which are not written in this book.
31 However, these things have been written so that you might believe that Jesus is the Christ, and that by believing you might have life in His name.
It is said that a week is a long time in politics. This is because so many things can take place during a week. In these days of modern and ultra fast communications it is even more true. Many things change and the changes happen suddenly and spreads almost instantly.
There are those times when so much happens that it is practically impossible to be able to recount them all. The Newspapers and the press will give out as much information as they can to keep us all informed, but they are not able to give us all that happens.
In a similar manner John tells us that what he has written in his gospel is only a fraction of all that Jesus did. There was much more. We must assume that there were many more miracles that Jesus did. We know that many of these have not been recorded individually. Mark tells us that many were healed:
10 For He had restored many to health, so much so that as many as had infections tried to get near enough to touch Him.
11 And whenever the unclean spirits saw Him they fell before Him (prostrated) and cried out loudly saying: “You are the Son of God”.
12 And He rebuked them much, lest they might make Him known – Mark 3.10-12.
All the gospels only record a small number of all that Jesus did and taught, but what they recorded they did so under the control of the Holy Spirit. This was so that all future generations would get an understanding of the mighty power of Jesus to bring the Kingdom of Heaven into this world.
In a similar way we only have a certain amount of the teaching of Jesus, but it is sufficient to guide every believer into His paths of righteousness. We can also assume that the rest of the New Testament is full of the teaching that Jesus would have passed on to His disciples.
The more we familiarize ourselves with all that is recorded for us in all the gospels of what Jesus did and said, then the greater will be our understanding, our appreciation of Jesus, and our desire to do the same as He did and even greater things: John 14.12:
In all sincerity I tell you: the one believing in Me and the works that I do, he will do even greater things than these, because I am going to the Father.